Locomotive fuel conveyer



Feb. 6, 1940. H. E. LIPPERT LOCOMOTIVE FUEL CONVEYERl 'Original Filed April 22, 1935 4 Sheets-Sheet l mul mm.

NNE

INVENTOR Feb. 6, 1940. H. E. LlPPl-:RT

LOCOMOTIVE FUEL CONVEYER Original Filed April 22, 1935 4 Sheets-Sheet 2 ll llll .l :.J

Fell 6 1940 H. E. LIPPERT LOCOMOTIVE FUEL CONVEYER Original Filed April 22, 1935 4 Sheets-Sheet 3 R O T N Y E v m Feb. 6, 1940. H E, LIPPERT 2,189,074

LOCOMOTIVE FUEL CONVEYER Original Filed April 22, 1955 4 Sheets-Sheet 4 IIIIIIIIIIIIIII INVENTOR j@ @fw Patented Febr, 6,

2,189,014 y LoooMo'rIvE FUELVV ooNvnrnn l t Henry E. Lippert,-Pittsburgh, Pa. Application April 22, 1935, seriaiivo.v 17,60*:V

' u Renewed August-'27, 1938 19 claims... (ci. 1984.415)

, *inventonrelatesto` lfuelvellveyer's and l stokers, and particularly. to the vconduit system `with each other.

andfuel impelling means thereof. e object of the present nvention is to arrange or dispose the conduits and the fuel impelling means in of this improved relation ofv conveyer parts within alocomotive..y f

It is a'furtherobjectof the'invention .to pro` .l vide yin a locomotive,` an` elevator or riser con- Tduit, a.v delivery conduit and a helical I`screw within thedeliveryfconduit, andto arrange these `parts with y.respect-9to one'l another so that, fuel can be forcedffreely and leasily through Athe riser conduit bythe screwy Stated `specically, v l in providing in, a. locomotive, a riser conduit of novel .formation arranged to direct fuel.` to"`a position for its distribution over the'rebed, a delivery conduitanda helical screw solely Within thedeliv'ery conduit arranged to'force fuel fthroug'nthe riser conduit, and in disposing the conduitsand screw in `an improved relationwith eacnuother so .that the. screw y can discharge the fuel laterally from rits"l underside from one conduit into'the oth'er...l Y

,Other objects, advantages and details of the invention will appear'from a reading of the following description, taken in connection with-the accompanying drawings, formingi a partuhereof, in which: l e

nig.- ifijs af .verdeel iongitadinal sectional view of ajwrearportion of l a locomotive anda forward. portion of Aa tender, With the improved conveyer applied thereto.` vlParts ofI theconveyer arebrokenA away and-removed. Fig'. )2 is la 'transverseA 2-2 of Fig. 'e l Fig. :SLi-s a vertical transversey sectional. view taken on line 3-'3 of Fig. 1". .l 'FigI eis a `l-Lingitudi'nal "vertical section taken onlinesL-Ll of AFigli. 'f I Fig. 5 is'y a transversesectional 4view taken on line s sofrvrigrley--j Fig:4 (iis a verticallongitudinal central section of tneiocomqtiye backheadmtnthe riser 'conduit foftlie' 'con'veyer mounted thereon. 'The upper portion' 'of theriser conduit, is. shownl in .section and the lower portionthereof `in` elevation, the

- `cmlveyer dellivelyI conduitv beingy removed.

.e Fig. 7. a transverse' sectional view taken on irregularl line 7 1 of .Fig.' ,6' the: delivery conduit replaced.

novel and. improved relation Another Objectis the provision the .-improvem'ent consists section'v taken on yline Fig. Sis atransvers'esectionftaken on line 8;-8 of Fig. 7 on a reduced scale.

Fig. y9 is a horizontal transverse sectional view 'taklijorl lrlSS-'I-.S 0f Fig'. 7., and: A l' i Figi. 10, is a' vertical section vtaken on line log-1n; oiffjr'i'g. r9.@ l y 1 Referring to the` drawings; alocorntive designated-generally by theletter L is.y coupled at It injthei, conventional manner to a tender T.. The locomotive yhas a rebo'x Il provided with ygrates l2, a backhead. i3 having affringv opening 'i4 therein,';a"ca'b""l5 providedfwi'tha lcab deck l5 below theelevation of the ringfopenin'gl, Vand a frame 17. Theftender. hasla' fuel. bin or'bunker is, adeck 1.9 'extejziding'beneath the fuel, bunker, aframe"` 2t; and `a vcoi'npartinen''t'Y 2 l" between the bunker I8 and` tender frame 2liv rfor V'receiving the rear. end of.V the fuel conveyer.l I1' t The conveyer comprises, generally speaking, la

trar'i'sferl portion extending., frornfbeneath `the y* bunkerx'l to a'point adjacent the"backh'ead` [3, and a combined fired'oor casing and lriser conduit 'in thel locomotive. The 'transfer 'portion corni prisesanupwardly I"open 'trough 'mounted on ,theivtenderlin' v'c'o'n fipartment' 2li, and a tubular on each side ofthe troughapproximately equi-V distant fromlthe ends thereof is a roller..22 arranged toturn' about a common transverse axis, and rest upon angle irons23 attached to the side,

of vcompartmen't 2|.v "This supporting ar.-

rangement. for the trough permits the latter Vto p swing 1atera11yabout @vertical 'axis'rmidway between ther rollers', andv valsoallows'the trough to lro'cl; s'ligyhtlyin a 'vertical plane about the axis of'. rol1'ers'f22 when the locomotive and.tenderv pass over turn-tables' and""crossover s. -Aspring f 2li,4 composed of a pair of vrspring-steel plates, is

secured to Vthe tenderfian'ieiZ and arranged to slidably engage theunders'ide of' the; trough pto" maintain'the latterfin .a horizontal position under normal operating conditions, 'should therelbeany tendency 'furthe trough to tilt..` Ifjdesired, a e011 springinserted betwen-the/-fo'rw'ard endlof the troughA e and"V the.y tender iframe may be used v,to accomplish the.saine.purposfeiffy f: .f ,e .A To preventloss of fuel between the tender decl; I9 and. trough A, asealng frame 25, rectangular l in shapearld 4form'edof.'favr'i'gle irons,f.is held in contactjwith tne'undervside of the tender'deck 2 l2,189,074 tral plane `of the locomotive and the firing openi by means of .adjustable `screws v25 on .the trough. The frame 25 extends downwardlyinto trough A to move in a horizontal plane therewith.

' A tubular extension 21 on the forward end of the trough is provided with an enlargement 28 o n which the rear end of the delivery conduit D `is seated. 'I'rough A and delivery conduit'D are pivotally connected together in end-to-end rela-` tion by means of a clamp 29 which engages projections 30 and'3Ion the top and bottomjfaces,

respectively, of the enlargement 2 8., The outer surface of the enlargement 28 and the inner surface of the portion of the delivery conduit D over lapping this enlargement are substantially square in vertical transverse section (Fig.` 2) and arcuate in horizontal transverse section `(Fig. 5). The pivotal connection betweenr trough Ar and conduit D prevents movement' of Vonewith re-,1v

spect to the other in a vertical plane, but permits" the delivery conduit to swing laterally .with'refe erence to the trough about the approximately vertical axis of projections 3 0 and 3-I'."

The delivery conduit D slopesupwardlyfrom beneath` the tender deck I9 to the cab deck I6. The rear end of this conduit isarranged inthe vertical central planexofv the tender, and its forward end is disposed tothe left side of 'the vertical central plane' of theA locomotive. The conduit D is substantially" cylindrical in shape, and comprises a forward short section 32 and a rear section 33 rigidly secured together. The inner surf facev of forward section 32 is of greaterldiameter than the inner surface of rear section 33.

A ball element or enlargement 35, which con-'- stitutes one part of a ball and socket joint bee tween thedelivery conduit` D andA the riser conduit R, is formed on the forward section 32v and received by a spherical seat or ange 36 formed on the lower end of the riser conduit, C onduits D and Rare flexibly connected together 'by means of a ball joint clampy 31. A wall 38 closes 'the .front end of the delivery conduit, and a fuel "outf let aperture or opening 33 in the lowerportioniof the right side wall Vof this conduit is spacedslightly rearward of the front wall '38. The out# let openings 39 and a fuel inlet aperture oropening 4I) in the lower end of the riser conduit regis#` ter with each other to provide communication between the lower half of the conduit D and the conduit'R. The delivery conduit D opens rlaterally with respect to its axis through the spheri` cal surface of enlargement 35, and the riser conduit R opens laterally on the left side Aof the vertical central plane of the locomotive throughthe spherical surface of iiange 35. The forward vend ofthe delivery conduit opensat its side toward one side ofthe locomotive, and the lower` end of the riser COIlduit'opens toward the opposite side of the locomotive. Conduits D and R vInaynbe said to be disposed in'side-to-end relation with each other, since the delivery conduit communi-'- cates through a side wall thereof with the lower end ofthe riser conduit.'

The riser Conduit R. Curves latallv, upvvar andforwardly fromthe conduit D to the firing opening I4. The forward andrearward walls 4l' and 42, respectively, ofthe riserconduit curve:

forwardly, and the side wall 43 opposite the inlet opening 4l),` curves v`down v vardly and laterallyfto the delivery conduit The side wall 43 of the riser conduit formsa laterally'and lupwardly ex tending, curved, Continuation of; `'die Wallnf the delirey gndui- The 'riser enduitat its 'upper @ad Opens into the liredor asng'F, and extends.

equaldisiane finisse@ sie@ 0f. the Vertical` sning I4. The combined redoor casing and vriser conduit is rigidly 'secured adjacent the` iiringV y opening to thefbackhead I3 by studsy 44, and is further supported by'means of a bracket45 on the lower end of the backhead.v c l'I'he iiredoor casing F extends around the sides and top of the .ring opening I4, andcar'ries .af nredo'or 46.,- A fuel'distributing plate 41 extends through the firing opening, 'and is .-xed on la or! lowered, according to the condition of the fire, by meansof a set screw 49 arrangedto engage an 'I v' arm-59 on the shaft l58. A distributor head 5|',

conduit, is secured to the Acasing F by cap screws 5 2. Blasts of pressure fluid issue .from jet. holes the discharged stream of fuel'andfprevent the fuel from striking the walls'of/ the-'ring;open' ing I4.

^' Alf-'helical screw "55 trough A is connected by a'unive'rsal joint 55 to a helical screw-'51 inthe delivery conduit'D. r'Ihetrough screw-55 is fixed* g c v .Y @9* case 59'. "The screws 55 andfl'll are rotated in the 'usualmanner by a driving,v mollorinot` shown.l

by pins 'to a drive shaft 581i journalled in gear operatively connected toa vgear liixed on'drive shaft 58. yThe deliverycondui-tfscrew 51 extends planerof the rearward or insidesurfac'e 'of front wall 3B. The screw 55 is formed lof ahub'62 and` across the outlet' openingv 39 substantially to the a right hand impelling helical `thread or vane 63,

and screw 51 hasa hub "64 anda righthand 'mainr impellin'g helical vane'6r5. yThe vane A63 extends throughout the length ofxthe trough screw,v and the vvane 55 terminates opposite'f'the `center of outlet opening'39.:A reverse-vane orleft hand impellingffvane segment IIiis-providedcon thev I frontend of screw'51. A right hand vane segment 'E1 and an additional left'han'd vane seg-s ment 68-are also formed on screw 51 opposite the outlet opening 39 in the concurren; The left hand vane segmentsv 66 and 68 are diam'etrically opposite each other, and rightfhandvane'segment 61 is diametrically opposite the forward yportion of right hand vanel65. Thelvane4 segments opposite the outlet opening 39 are of uniform radius,i or stated in other words, the helical edges thereof are concentric'with Ytheaxis of screw51. v 4The lefthand vane segments vvEIyand 68 join, respectively,.with right hand vane 65andright hand vane segment 61 in a plane perpendici ular to the axis of screw 51 through-'the center of loutlet opening 39,. yThe helical vane segments on the forward endif-of screwl 51 are of greater dameter` than the helicalvane in therear section 33 ofthe delivery-,conduit D. Telescopio' joints in the conduit system and between the helical screws have been purposely eliminated. Since-Q55v4 the conduits and helical screwsl are not extensible, and the screw 55 is fixed with respect to longitudinal movement of' thetrough AA. by, means of pins 60, the portionA of screw 51 opposite the out- L z fr" i9 yf tudir'ial movement of the opening.

let opening 3 9 is vfixed with .ref

In operation, fuel :falls from the bunkerfl I eren'ce tol lungi-f through an aperturets'in the tenderfdeck'ls `into the trough A. The fuel isfconveyed through the troughA by helical screw 5 5 and through the deliv-v A1o shaft 48v journalled in `the redoorcasing. The.' Y g Aforward end of the distributing plate can be raised f rearwardvof vthe rupwardly open end of theriser ery conduit D bythe helical screw 51, and it is forced through the riser conduit R into" the casingxF by screw 51. The blasts of pressure fluid which issue from jet holes53 in the distributor ihead 5I discharge fuel from the top of the upwardly advanced column .of fuel onto the `rebed on grateslZ. I

The helical screws. 55 andg51 rotate normally in ,counter-clockwise direction, as indicated vby ytheifarrowsin Fig. 7, so that screw 51 can dis=- chargethe fuel from its underside from the botv tom -half ofdelivery conduit D horizontally into' the riser conduit R. The 'screw 51 rotates in such direction that the lower portion thereof at the outlet opening 39, and to force the fuel through the riser4 conduit. y

' The construction of helical screw 51, the forward end of the delivery conduit D, and theriser conduit R, and the relative position of these parts with :one another provide a conveyer structure in which fuel can be forced freely, easily and in loosey forrnfthrough the riser conduit'with less powervthan-is required with similar devices, and v:without the aidof' separate elevating mechanism in the riser conduit. f y

lBy thel expression reverse vane used herein, the meaning intended to be conveyed is that suchvane is wound onthe hub of the screw in the oDnoSite direction to that of the vane on the remaining portion of the hub.

vThe general arrangement; of the above described fuel conveyer upon an intercoupled locomotive and tender, including the means for flexi- :blyy connecting the conveyer members to each other and the vmeans for supporting the members upon the vehicles, has been made the subject matter: of a divisional application, Serial No. 129,852 filed MarchA 9, 1937', for Locomotive. fuel 400m/ever. l

I'claim: i 1..,ln a fuellconveyer fora locomotive having a firebox, a delivery conduit, a riser conduitare4 ranged todirect fuel to a position for'its distribu .tion over the firebed in the frebox, said conduits communicating with each other, said riser conduit' curving laterally and upwardly `from the delivery conduit, and a helical screw withinthe delivery conduit constituting the sole means for impelling f fuel therethrough and forcing it through the ,riser conduit, said screw having a reverse vane thereon -at the communicating ends of said conduits and being arranged to normally rotate in. suchY direction that the lower portion thereof aty the delivery end moves toward the lower end vof saidriser conduit to discharge the fuel fromits underside and transversely of its livery conduit constituting the sole means for impelling fuel therethrough and forcing it through theriser conduit, .said screw havingl a reverse `vane thereon at the communicating ends of said conduits and being arranged to discharge the fuel portion of the communicating opening between said conduits'` being disposed opposite the `loiwer half of said screw.`

3. In a fuel conveyer for a locomotive hav ing a 3f Aimm its'underside--and trsnsvf'siy 'of 'its axis from one conduit into the otherand the greaterv rebox, adelivery conduit, a riserconduit having a fuel inletopening at its lower end and beirig arf ranged to direct fuel to a `position for its *distribu-A tion over the iirebed in the iirebox, said'comduits communicating witheach other, the side wall 'of g the riser' conduit opposite said inlet opening curving` downwardly and laterally to the vdelivery conduit and forming a continuationv of the wall of 4 ,the'deliverycon'duiu and a helical screw"with in the delivery conduit constituting the sole means for impelling fuel 4therethrough and forming it through the riser conduit, said screw having a reverse vane disposed oppositesaid linlet opening and beingarranged to-normally rotate in such direction that the lower portion thereofl at the delivery endmovestowardsaid curvedv side wall.

4. In a fuel conveyer for a locomotive having a firebox, aV delivery conduit, a riser conduit hav-` f ing a fuel inlet opening at its lower end and being arranged to direct fuel to aposition for its ldistribution over thefirebed in the firebox, said conduits being in communication with one another,

the sidewall of the riser conduit' opposite said inlet openingcurving downwardly and laterally to the delivery conduit and forming a continual tion of the wall of the Ydelivery conduit, and a helical screwwithin the delivery conduit constituting the'` sole means for impelling fuel therethrough andforcing it through theriser'conduit,

saidv screw having `a reverse vane on its delivery end. and being arranged to discharge the fuel late" v erally fromuone conduit into the other.

wardlyand laterally to thedelivery conduit and forming a continuation of the wall of the delivery conduit, and a helical screwwithin the deliv ery conduit constituting the sole means for impelling fuel therethrough and forcing it through the riser conduit, 4said screw having a reverse vane on its-front end and being arranged `to dis-` charge the fuel laterally from j its underside through saidexible joint from one conduit yinto the other. v `f 6. In a fuel conveyer for allocomotive having a rebox, adelivery conduit, a riser conduit having a fuel, inlet opening at its lower end and being arranged to direct fuel to a position for its distribution over the ii'rebed in the fireboX, said vcon-l duits being disposed in end-to-siderelation-with V one another, vth'edelivery conduit having an 'en largement at its forward end provided with a fuel f outlet l'z'iperture opening laterally, the'sidewall of the riser conduit opposite said inlet opening vcurving downwardly and laterally to the delivery conduit and forming a continuation of the wall of the delivery conduit, and a helical lscrew within ,l thedeliveryconduit constituting the sole means for impelling fuel therethrough' and forcing'it through the-riser conduit, said screw having` a reverse vane on its `Vfront end and being arranged i the lower. portion thereof at the.; delivery end-ff moves, towardsaid; curved side4 wall to r'discharge 1 l .g :In a fuel v.cimveyernf or la. 4locomotive having-c: 5k

a rehox, d deliveryl cond'uitfiprovided with .a fueli:l outlet opening in a side wall thereof, a Ariser. 'coniduit having a fuel inletmpeningatfitsjlower end@k andbeingfarrangedto.directiuelto apposition for.. its distribution.oventhefirebedin the iireboinlo 7.,.I n,a fuelconveyer fora loccrnotive havingV a fliehen aelelverv conduit; ariser; conduithavf. maaien-inlet Opening. enislower-end' and beine...

y arranged to. direct-fuel to v a position for itsdistri- 5 v,butlo'n' over the iirebed in the firebox, said conduitslceing disposed .in-IendV-to-siderelation `with onefanother,,the'delivery conduit having an enlargedfportion thereon exibly received by` the riser conduit,.,sai d enlarged .-portion being providl-0,edf.with..a fueloutlet aperture opening laterally,

i io

60 a i'lrehox,l a delivery. conduit provided in Aa side the delivery conduit constituting the solemeans 60 wall thereof witha fuel. outlet aperture opening for iinpelling fuel therethrough .and forcing it l towardone side of the locomotive, a riser conduit through. the riser conduit, lsaid screw having a hal/'ing a fuel inlet Openingfat its lower end and reverse vane disposed opposite said outlet open V being arranged todirect `fuel to a position for ing and beingarranged' .to normally rotate 65 its distribution, over .the `flrebed lin the fireloox,v such' direction that the lower p'ortion'thereof at 65 said conduits being disposed in endfto-side relathe. delivery encl-v moves towardsaid curved side I tion with one another, ,the side `wall of the riser wall.; l f f conduit opposite said inlet `opening curving down-v 14:.; In a fuel conveyer. for va locomotive having' wardlyl and laterally to the delivery conduit, and a rebox, a deliveryconduitprovided with a fuel 3 f 70 a helical screw withinhthe delivery conduit con- Olltletiopenng in the lOWer partlof a 'side wallv 7,0 stituting the sole meansfor impelling fuel there` theleOf," a ISSI- @Onfllllv Opening laterally at zitsr y through-and forcing it through the riser conduit, lowerv end .andbeing arrangedlto direct fuel to a5? f said screw having a reverse vane on its delivery position ferite-,distribution overv the firebed in the endvopposite said outletapertureand being ar.- rebox, saidzconduits:being:.disposedg.nendrtor.

7g ranged to .normally rotatein suchndirectionthat, side .relationgwith-:oneanotherfthe sidewall 'f 7&5 t.

the sidefwall ofthe riser conduit opposite said in*- let4 opening curving downwardly andlaterally to the, delivery conduiu-and a helical screw within theldelivery .conduitconstituting the sole means disposed oppositerthe lower half of said screw.

SrQIn afuelconveyer fora locomotive havingy a fir'ebox, a delivery. conduit, `a riser conduit havinga lfuel inlet opening/atits llower'endand be- ,inglarranged ,to directlfuel to va position for its distriloution over. the nrebed inthe rebox, said conduitsbeing, disposed in `end-to-side relation with one another, thefside'wall of the riser con duit. opposite. saidinlet opening curving down- ,vzwardly and laterally to the delivery conduit, and 'a helical screwwithin the delivery conduit constituting the solenieans forimpel-ling fuel therethroughjand.forcingit through the riser conduit, said screwhaving a .reverse vaneof uniform raditherethroughY and. forcing .it throughthe riser conduit, said screw having la reverse-vanewdis-` posed opposite said inlet opening and being. ar

ranged to normally. rotate in such direction .that

the lower .portionthereof atthe delivery end "moves toward said curved side wall, andthe greater portionof said vfuel inlet opening being disposedoppositethe lower half ofsaid screw.

l0. .In a fuel conveyer for a locomotive having said conduitsfbeing dsposedin end-to-siderela#` tion-with one.. another, the rsidewall v.of 'the'ri'ser conduity oppositev said' inlet opening curving 3- downwardly-.ltdthe.delivery.conduit, and a heli?` v charge :the fuel from its=underside fromvoneconduitinto the other. l

12.*-,In a fuel conveyerfforlva locomotivev having a mebomapdelivery conduit provided in'5'a side; wail thereof .with a fuel outlet. aperture dpening .251

laterally; a riser, conduit having a fuel inlet opening at 1ts lower end and being arranged `to direct 15;! for@jmpelling,,fuelzftherethrough and forcing it cal ``screw .withinI the delivery conduit constitutl-f 15 1 through theriser conduit, saidscrew having a ing-.the solerneans.for;.impelling fuel. there.v

reversefyane on.,its,front end/and being arranged through and .forcingit throughthe riseI-conduit' 50 dsnfyfgethefpfuel through said enlarged por.- said screw. having. a reverser/ane .'adfan addi; ticrnfronil one :conduit into- .the other, and the tional-impelling.portion on itsfront endropposite Y cozgreater portionnf said fueloutlet'apertures besaidoutlet, opening andbeing arranged to dig-L20,

conduits being disposed to one side-of Ythe'vertical centralplaneofthe locomotive, the side wall of@ the riser conduit opposite said' inletopening curvingidownwardly and laterally tothe deliveryy 5 opening laterally atits 'lower endy and being arranged. to direct fuel toa bution `over the iirebed in duit vand forming a continuation of the wallfof? v'" and ahelical screw within the delivery conduit,

Aus on its front end and being arranged to disconduit, anda helical screw. within they delivery charge the fuellaterallyV from its underside fromA conduit constituting the sole. means. for impe'mgr 1 one conduit. into theother, andthe forward end` fuel. therethrough .and forcing it through the -of the impelling portion` of the screw being'A of riser. conduit, saidfscrew having'an" additit-Jnall increased diameter mpelling portion Opposite said `outlet nertureV n 40 9. .In a fuel yconveyer for a locomotive having a arranged...to cooperatewith.` the main. impmng' 40 u fireboX,.a delivery conduit, a riser conduit haV- portion of .said screw to'swe'ep thev fuelvtoward ying a fuelinlet opening at .its .lower end andbethe vertical central plane of the locomotive -said ing arranged .to direct fuel toa position for its screw also. being arranged towno'rmalny rotat distribution over the .rebed in the-firebox, said suchdirectionthat thelowerfportion thereof :at l i y conduits 1seing disposed in endtoside vrelation the delivery end moves toward said' curved side; 45 i.; withone another, the side .wa-ll of the riser conwall. V duit opposite.. said inlet :opening curving down-v 13. In' a fuel conveyer for a locomotive having wardly kand laterally to f the` delivery conduit, a rebox,.a delivery conduit providedvwith a, from.. and a helical screw within the delivery conduit wall and a fuel outle'tfopening in a sidewall constituting. Athe Sole means for" impellng fuel thereof. rearward of the front wall, a riser conduit"50 position for its distri-f therebox,` said conduits belng disposed kin end-'to-side relation with j .f vwall of the riser conduit L5,5 f opening thereinY curving the .riser conduit yopposite the lateral `opening therein curving downwardlyf'andlaterally to the deliveryv conduit, and a helical screw within the delivery conduit.. constituting, theA sole means for impellingl fuel l therethrough and forcing it through the riser conduit, said screw having a plurality of reverse vanes andv an additional fuel `forwarding impelling portion` on ,itsv front, end

opposite'said outlet opening and .beingl arranged to discharge the fuel laterally from its underside y from one conduit into the other. 5 ,y

wardly and laterally to the delivery conduit, and

a helical screw within thefdelivery conduitl constiv tuting the solev means for impelling fuel thereinto vthe other.

"through and forcingit through the riser conduit,

saidscrew having a reverse vane of uniform radius on its front end opposite `said outletopening,`

' the .part of said screw opposite said outlet' open-` ing being fixed with respect to longitudinal move- I' lment thereof and arranged to'discharge the fuel laterally from its underside vfrom onel conduit 16. In a fuel conveyer for a locomotive having a firebox, a delivery conduit .provided in aside wall thereof witha fuel outlet aperture, opening toward one side of-tlie locomotive, a riser 'conduit having-a fuel inlet opening at its lower end opening toward-the other yside of they locomotive and i being arranged tov direct fuel to a position for its ,distribution over'the firebed in the rebox, said conduits communicating with each other and the' adjacent endsof said conduits being .disposed to one side` of a vertical planethrough the remote endsjtlfiereof,v the side fwall `of vthe riser conduitv opposite said inlet opening extending downwardlyvand laterally to the delivery conduit and forming a curved continuationof the wall of the delivery conduit, and a helical Iscrew within the delivery conduit constitutingv .Y the 'sole vmeans for impelling fuel therethrough and forc-l ingit through the riser conduit,l said screw hav- `ing an additional impelling `portion opposite said:

outlet aperture and being arranged to normally rotate in such direction'that the Vlower portion thereof.; at the delivery end moves toward said curved side wall.

17.2I'n combination with a'` flreboX-'ha'ving ai o backhead with a firing opening therethrough, a

tubular Stoker conduit, extending in a general upward and forward directionl andA at its.v delivery end communicating with said iiring opening, said conduitcornprising flexibly jointed conduit sections, the lower rearward section having vits bottom `r`inside surface substantially straight along the medial -vertical plane thereof, the upper for- `ward section lof saidconduit constituting an up- `the axis of said helical screw.`A`

, helical screw.

Fri

turned delivery portion having a curvedfsidewall,

TIO

the' inside surface of said curved side wall'being in concave in transverse cross section and forming intransverse cross section a laterally` and up-` war'dly extending continuation of the inside surface ofthe lower rearward section of'saidv con-.

duit, and a helical screwy within the lower rearward section of said conduitconstituting thefsolel o means-for impelling fuel therethrough" and forcingv itfthrough said -upturned delivery portion, said `conduit side wall curving laterally and upwardlyina direction away from the axis of said helical Screw. 18; In combination with avlocomotive provided witha flrebox having a backhead with a'ring t opening r therethrough, a tubular stolzer' conduit extendingfin a `general upward and forward direction' andat. its ,delivery end communicating' with said firing opening, said conduit comprising flexibly jointed conduit sections, the lower rearward section of said conduit having itsbottom ,inside` surfaced substantially straight alongl` the l, medial vertical plane thereof, the forwardendof l said lower rearward section being disposed to onev side of thelvertical central plane of the locomotive, the upper forwardsection of said conduit constituting an upturned delivery portion having a curved side wall, the inside surface ofsaidl curved side wall being concave in transverse crossI .section and` forming Vin transverse cross section a laterally and upwardly extending continuation yof the inside surface of the` lower rearward section of said conduit, and a helical screw` withinl the lower rearwardsection of said conduit constidelivery portion, said 4conduitV side wall curving' laterally and `upwardly in a direction away `19.In combination with a rebox having va backhead with a firing opening therethrough, ra

stoker conduitextending in al general upward and. forwarddirection, said conduit-comprising a tubular lower rearwardy portion having itsbottom inside surface substantiallystraight along the medial vertical; plane thereo,and` a short'upfrom turned delivery portion communicating withr said firing .opening and having a curved sidewalk-said delivery portion being flexibly connected at its lower end closely adjacent said backhead to the upper forward end of said tubular portion, the

inside surface of said curved side wall being concave in transverse cross section and forming in transverse cross section' a laterally and` upward- 55' ly extending continuation of the inside `surface of lthe lower rearward portion of said conduit, and a -h elical'screw within the lower rearward said conduit side wall curving laterally and upo portionI of` saidfconduit constituting the solel l means forr impelling fuel therethrough and forcling it `through said upturned delivery portion, y

wardly in a direction awayfrom the axisof said A t HENRY E. LIPPERT.

tuting the sole means for'impelling fuel there- 35i l through and forcing it through said upturned( 

